Rebuild docsify and delete docs caching code

docs/lib/plugins/disqus.js

@@ -0,0 +1,55 @@
+(function () {
+  /* eslint-disable no-unused-vars */
+  var fixedPath = location.href.replace('/-/', '/#/');
+  if (fixedPath !== location.href) {
+    location.href = fixedPath;
+  }
+
+  function install(hook, vm) {
+    var dom = Docsify.dom;
+    var disqus = vm.config.disqus;
+    if (!disqus) {
+      throw Error('$docsify.disqus is required');
+    }
+
+    hook.init(function (_) {
+      var script = dom.create('script');
+
+      script.async = true;
+      script.src = "https://" + disqus + ".disqus.com/embed.js";
+      script.setAttribute('data-timestamp', Number(new Date()));
+      dom.appendTo(dom.body, script);
+    });
+
+    hook.mounted(function (_) {
+      var div = dom.create('div');
+      div.id = 'disqus_thread';
+      var main = dom.getNode('#main');
+      div.style = "width: " + (main.clientWidth) + "px; margin: 0 auto 20px;";
+      dom.appendTo(dom.find('.content'), div);
+
+      // eslint-disable-next-line
+      window.disqus_config = function() {
+        this.page.url = location.origin + '/-' + vm.route.path;
+        this.page.identifier = vm.route.path;
+        this.page.title = document.title;
+      };
+    });
+
+    hook.doneEach(function (_) {
+      if (typeof window.DISQUS !== 'undefined') {
+        window.DISQUS.reset({
+          reload: true,
+          config: function () {
+            this.page.url = location.origin + '/-' + vm.route.path;
+            this.page.identifier = vm.route.path;
+            this.page.title = document.title;
+          },
+        });
+      }
+    });
+  }
+
+  $docsify.plugins = [].concat(install, $docsify.plugins);
+
+}());